Vaccination against harmful infectious diseases has been one of the most important public health advances of the last century. Due to surging demand for a wider range of vaccines, the vaccine industry is facing a challenge to update from traditional, time-consuming methods to new, more efficient approaches. Virus quantification represents a rate-limiting step at many stages of vaccine development and production, for both egg and cell culture as indicated by the stars in the schematic to the right. Currently, one of the most widely used tools for the determination of virus concentration is the viral plaque assay, or variations such as tissue/egg culture infectious dose, TCID50/EID50. The viral plaque assay is a cumbersome, subjective and traditional biological technique that was originally applied to the quantification of animal viruses in 1952. Other methods for virus quantification exist, including a variety of ELISA-type protein assays, transmission electron microscopy (TEM), and quantitative PCR (qPCR). However, each of these methods has its own drawbacks, perhaps the most important being that they require well-trained technicians and have significant time to result. The ViroCyt Virus Counter technology represents a breakthrough in virus quantification as it requires minimal training and provides a direct, physical measurement of total intact virus concentration within minutes. The ability to track virus levels in real-time, which is not possible with traditional methods, ensures an optimal harvest time with the highest yields. To learn more, email us at firstname.lastname@example.org.
White Papers & Case Studies
- Sanofi Pasteur Presentation: "Accelerating Viral Vaccines Process Development"
- White Paper: "Rapid Quantification of Egg-Grown Influenza"
- FDA Case Study: "Comparison & Quantification of Egg & Cell Cultured Influenza"
- Sanofi Pasteur Presentation: "The Need to Improve: Introducing Innovations in Existing Vaccine Processes"
- Sanofi Pasteur Presentation: "Virus Counter Use for Determining Seed Selection & Viral Yield Information in Upstream Process Steps"
“It is enough for me to say that using the Virus Counter was effective in replacing 2 hours of work and 6 days of waiting for results with only 30 minutes to 1 hour to get a conclusive result. The Virus Counter has had and will have a great impact on our work stream, specifically when results are needed right away to start the next step of the experiment.”
—Protein Sciences Corporation